PREFACE 



This report provides coastal engineers with documentation that a wide zone 

 of nearshore bathymetry responds to long-terra increases in water level by 

 migrating inland with the receding shoreline. The dimensions of the zone 

 affected depend on the wave exposure. A simple procedure is presented for 

 estimating the magnitude of shore recession and the depth of profile adjust- 

 ment for any sandy stretch of shore on the U.S. side of the Great Lakes. 



This report is based on a 9-year series of nearshore surveys conducted on 

 the eastern shore of Lake Michigan. The first three surveys (1967, 1969, and 

 1971) were carried out by the U.S. Army Lake Survey as part of their shore 

 processes investigations. The remainder of the work was carried out under 

 the sediment hydraulic interaction program of the U.S. Army Coastal Engineer- 

 ing Research Center (CERC). 



The report was prepared by Edward B. Hands, under the general supervision 

 of Dr. C.H. Everts, Chief, Engineering Geology Branch, Engineering Develop- 

 ment Division, CERC. Reviews and helpful comments from Drs. C.H. Everts and 

 R.D. Hobson of CERC, and P. Bruun, are deeply appreciated. Dr. W.L. Wood and 

 J. Pope provided data used in the example problems. 



Comments on this publication are invited. 



Approved for publication in accordance with Public Law 166, 79th Congress, 

 approved 31 July 1945, as supplemented by Public Law 172, 88th Congress, 

 approved 7 November 1963, 



f/ 



ilD E. MSHOP 

 Colonel, Corps of Engineers 

 Commander and Director 



